Current State ID: 9
Current State Description: - Fast elevator `fast0` is at floor 0 with 0 passengers out of 2.- Fast elevator `fast1` is at floor 3 with `p2` onboard, now 1 passenger out of 2.- Slow elevator `slow0-0` is at floor 2 with `p4` on board, 1 passenger out of 1.- Passenger `p0` is on floor 4.- Passenger `p1` is on floor 1.- Passenger `p2` is on board `fast1` on floor 3.- Passenger `p3` is on floor 4.- Passenger `p5` is on floor 5.- Passenger `p6` is on floor 2.

Child State ID: 22
Action Taken: (move-up-fast fast1 n3 n5)
State Description: - Fast elevator `fast0` is at floor 0 with 0 passengers out of 2.- Fast elevator `fast1` is now at floor 5 with `p2` onboard, 1 passenger out of 2.- Slow elevator `slow0-0` is at floor 2 with `p4` onboard, 1 passenger out of 1.- Passenger `p0` is on floor 4.- Passenger `p1` is on floor 1.- Passenger `p2` is onboard `fast1` on floor 5.- Passenger `p3` is on floor 4.- Passenger `p5` is on floor 5.- Passenger `p6` is on floor 2.

